Meaning of Siam
Unknown / অজানা / अज्ञात
former name of Thailand (def 1).
Gulf of, Thailand (def 2).
the former name (until 1939 and 1945–49) of Thailand
Gulf of Siam, an arm of the South China Sea between the Malay Peninsula and Indochina the former name of (the Gulf of) Thailand (sense 2)